Biodegradation and sorption of nodularin (NOD) in fine-grained sediments

Toruńska, Anna; Bolałek, Jerzy; Plinski, M.; Mazur‐Marzec, Hanna

doi:10.1016/j.chemosphere.2007.09.015

Cited by 28 publications

(12 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nodularin is a relatively stable molecule, with a low abiotic breakdown rate (Twist and Codd, 1997), but much of the added nodularin could still have been degraded by the bacterial community in the sediment (MazurMarzec et al, 2009). Torunska et al (2008) report complete degradation of nodularin in three weeks when nodularin was added as extracts from N. spumigena to sediment. In contrast to this, Mazur-Marzec et al (2007) found nodularin concentrations of 2.3 ng g À1 DW in surface sediments from 20 m depth several months after a bloom and concentrations of up to 342 ng g À1 DW sediment during the bloom.…”

Section: Discussionmentioning

confidence: 96%

Deposit-feeders accumulate the cyanobacterial toxin nodularin

Karlson

Mozūraitis

2011

Harmful Algae

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 96%

Deposit-feeders accumulate the cyanobacterial toxin nodularin

Karlson

Mozūraitis

2011

Harmful Algae

View full text Add to dashboard Cite

“…The highest concentrations were measured in the uppermost sediment layers collected during the N. spumigena bloom. Sediments with a fine-grained structure tend to accumulate a greater amount of the toxins (Toruńska et al 2008). LC-MS/MS analyses showed that, apart from NOD, demethylated analogues of nodularin ([DMAdda 3 ]NOD and [dhb 5 ]NOD) , and microcystin-LR (Kankaanpää et al 2009) were present in sediments.…”

Section: The Fate Of Cyanobacteria and Their Toxinsmentioning

confidence: 99%

Do toxic cyanobacteria blooms pose a threat to the Baltic ecosystem?

Mazur‐Marzec¹,

Plinski²

2009

OCEANOLOGIA

Self Cite

View full text Add to dashboard Cite

Cyanobacteria, otherwise known as blue-green algae, are oxygenic, photosynthetic prokaryotes. They occur naturally in many fresh, marine and brackish waters worldwide and play an important role in global carbon and nitrogen cycles. In their long history, cyanobacteria have developed structures and mechanisms that enable them to survive and proliferate under different environmental conditions. In the Baltic Sea, the mass development of cyanobacteria is compounded by a high level of eutrophication. The dominant species in the Baltic, the filamentous Aphanizomenon flos-aquae and Nodularia spumigena, can fix dissolved atmospheric N 2 , as a result of which they can outcompete other phytoplankton organisms. Heterocystous, filamentous cyanobacteria also make a significant contribution The complete text of the paper is available at http://www.iopan.gda.pl/oceanologia/ 294 H. Mazur-Marzec, M. Pliński to the internal nutrient loading in the Baltic. The blooms of N. spumigena are of particular concern, as this cyanobacterium produces nodularin (NOD), a hepatotoxic peptide. The concentration of the toxin in the sea is regulated mainly by dilution with uncontaminated water, photolysis, sorption to sediments and microbial degradation. The transfer of the toxin in the Baltic trophic chain through zooplankton, mussels, fish and birds has been reported, but biodilution rather than bioconcentration has been observed. Cyanobacterial blooms are thought to pose a serious threat to the ecosystem. Their harmful effects are related to the occurrence of a high biomass, oxygen depletion, a reduction in biodiversity, and the production of toxic metabolites.

show abstract

“…Nodularin is reportedly capable of persisting for “several months” in sediments [12], and the related cyclic peptide toxins, the microcystins, have been recovered from lake sediments at a depth of 30cm, which implies a capacity for longevity in some circumstances [55]. Experimental work has shown that nodularin can adsorb to sediment particles [56]. …”

Section: Discussionmentioning

confidence: 99%

First Report of a Toxic Nodularia spumigena (Nostocales/ Cyanobacteria) Bloom in Sub-Tropical Australia. II. Bioaccumulation of Nodularin in Isolated Populations of Mullet (Mugilidae)

Stewart

Eaglesham

McGregor

et al. 2012

IJERPH

View full text Add to dashboard Cite

Fish collected after a mass mortality at an artificial lake in south-east Queensland, Australia, were examined for the presence of nodularin as the lake had earlier been affected by a Nodularia bloom. Methanol extracts of muscle, liver, peritoneal and stomach contents were analysed by HPLC and tandem mass spectrometry; histological examination was conducted on livers from captured mullet. Livers of sea mullet (Mugil cephalus) involved in the fish kill contained high concentrations of nodularin (median 43.6 mg/kg, range 40.8–47.8 mg/kg dry weight; n = 3) and the toxin was also present in muscle tissue (median 44.0 μg/kg, range 32.3–56.8 μg/kg dry weight). Livers of fish occupying higher trophic levels accumulated much lower concentrations. Mullet captured from the lake 10 months later were also found to have high hepatic nodularin levels. DNA sequencing of mullet specimens revealed two species inhabiting the study lake: M. cephalus and an unidentified mugilid. The two mullet species appear to differ in their exposure and/or uptake of nodularin, with M. cephalus demonstrating higher tissue concentrations. The feeding ecology of mullet would appear to explain the unusual capacity of these fish to concentrate nodularin in their livers; these findings may have public health implications for mullet fisheries and aquaculture production where toxic cyanobacteria blooms affect source waters. This report incorporates a systematic review of the literature on nodularin measured in edible fish, shellfish and crustaceans.

show abstract

Biodegradation and sorption of nodularin (NOD) in fine-grained sediments

Cited by 28 publications

References 35 publications

Deposit-feeders accumulate the cyanobacterial toxin nodularin

Deposit-feeders accumulate the cyanobacterial toxin nodularin

Do toxic cyanobacteria blooms pose a threat to the Baltic ecosystem?

First Report of a Toxic Nodularia spumigena (Nostocales/ Cyanobacteria) Bloom in Sub-Tropical Australia. II. Bioaccumulation of Nodularin in Isolated Populations of Mullet (Mugilidae)

Contact Info

Product

Resources

About